Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3972c1e3faa6ad…

MALICIOUS

PDF

72.2 KB Created: 2021-03-03 03:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4ed84ccf259f73eab50442d66f0abf3e SHA-1: 8e2ad6474b1f79a939360f802128737298bd8c4a SHA-256: 8f3972c1e3faa6ad6b4cf2ba5437aac1793b786954e9133d73e6a7faa8b8ccc9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/award?keyword=hp+7520+printer+ink+problems PDF link annotation
    • http://vifijes.22web.org/offline_dictionary_free_for_android_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_603917799eadf.pdfIn PDF document text
    • http://lafarupikawa.22web.org/ge_profile_advantium_120_stopped_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_60333a04544ec.pdfIn PDF document text
    • http://nakalabaxis.mywebcommunity.org/learn_english_through_story_subtitles_english_level_4.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/turn_off_stability_control_jeep_jk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_6039ed08f13e0.pdfIn PDF document text
    • http://popijizixoxovoj.iblogger.org/didavugove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413002/normal_5fe93da79bd72.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zimadiwiv.rf.gd/75480061255.pdfIn PDF document text
    • http://xonowazibekaz.epizy.com/format_bm_pt3_2018.pdfIn PDF document text
    • http://sulifuzefusuw.rf.gd/microphthalmia-_associated_transcription_factor_isoform_4.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/az_driving_test_questions.pdfIn PDF document text
    • http://birelasali.rf.gd/50226147275.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/ways_of_the_world_a_brief_global_history_with_sources_combined_volume.pdfIn PDF document text
    • http://wumugajus.onlinewebshop.net/w_on_transcript_grad_school.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/lagu_albert_fakdawer_hari_hari_hidup.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/baltic_sea_region_programme_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 5396 bytes
SHA-256: 972252613acafdf817a6ad2ecd72e8eeaa3a193be3ac4a68e343c7d6c6da1d72
font_01_sfnt_off0000f0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D0 10224 bytes
SHA-256: 341c83c5771cad81e14dd59263eb332f2b5138858e0bca2cb4c43250e237588a